meters & testing
The CHHC-4 controls all of your growing area conditions accurately and reliably. First of all, it has all of the C02 control features of the CHHC-1 and CPPM-1. It also has the ability to control 3 other devices, a heating device and a humidity device. Records the min and max temperature, humidity and C02 levels.
Unlike some C02 controllers, the CHHC-4 is able to be calibrated by the user with the self calibration feature.
- *NEW* Green LED lights make this unit very plant friendly
- *NEW* Removable combination remote temp, humidity, light level & CO2 probe allows the CHHC-4 to be placed up to 16 feet away.
- *NEW* Protective caps to help prevent water from getting into the controller
- Monitors and controls CO2 with PPM accuracy
- Also controls 3 other devices, a heating device. a cooling device and a humidity device.
- Separate day/night temp and humidity settings.
- Records the min and maxi temp, humidity and CO2 levels.
- Has 2 separate outputs to control cooling and heating.
- Can increase or decrease the amount of humidity in the growing area.
- Remote temp, humidity, CO2 and light level sensor
Popularity: unranked [?]
The amazing Bluelab Truncheon Meter EC meter lights up to show the EC, CF and PPM readings. Truncheons are very accurate, reliable and no calibration is required. It’s stick-like design makes it great for stirring your nutrient tank too! This Bluelab meter will last for years and comes with a 5 year manufacturer warranty. Powered by 3 AA batteries. With its super tough, high quality, fully waterproof design, the Bluelab Truncheon Meter has proven itself for years.
What is it used for?
The Truncheon Meter measures the amount of dissolved solids in a solution and gives you a conductivity reading. To maintain optimum plant growth and phenomenal crops, you need to know what the conductivity of the solution is before feeding your plants and while they are growing. If the solution is too weak, your plants will miss out on the vital elements they need to grow. Too strong and you risk root burn, especially if evaporation occurs within your growing environment. The nutrient solution needs to be measured regularly so you know when to add more concentrated solution or when to add fresh water. Without a Truncheon Meter to measure it, you are only guessing and risk crop failure.
How do you use it?
There is no easier conductivity meter to use than the Bluelab Truncheon Meter! How simple is it to use? To find the conductivity of your solution, simply place the probe head into the solution for 1-2 minutes (automatically turns on) to reach the same temperature of your nutrient. Remove from the solution (automatically turns off) and place back in. The bright, easy to read Blue LED’s will flash next to a number(s) on the scale of your choosing. Rinse the probe after use in fresh water to stop nutrient salts building up on the probe face and clean once a week to ensure the Truncheon Nutrient Meter remains accurate. It is fully waterproof so if you drop it in the tank or into the swimming pool, it’s OK!
What is conductivity?
Conductivity is the total soluble salts contained within a liquid solution. Because pure water does not conduct electricity it has a conductivity measurement of zero. By adding soluble elements to the water, electricity is able to move through the solution giving it a conductivity rating.
Conductivity is measured using various scales. The scales the Truncheon will provide you is EC (Electrical Conductivity), CF (Conductivity Factor), ppm 500 (parts per million) which is also known as TDS (Total Dissolved Solids) and ppm 700.
What scale should I use?
EC and CF are the only two absolute scales of conductivity, however the USA mainly uses the ppm 500 scale (also known as TDS). The UK mainly uses the ppm 700 scale.
What maintenance does it need?
Nearly all conductivity meters need to be calibrated. The great thing is, the Bluelab Truncheon Meter does not need to be calibrated as this is locked in during manufacture. The only maintenance it requires is cleaning the probe and changing the batteries. ‘The instrument is only as accurate as the probe is clean’ – easy probe cleaning and a quick test is all you need to do to keep the Truncheon Meter operating perfectly for years!
What accessories come with it?
Batteries are included when you buy the Truncheon meter, but the Conductivity Cleaning kit is for maintaining the Truncheon Meter and is sold separately.
Check out how easy it is to clean the BluelabTruncheon Meter!
Has EC, CF and 2 ppm scales
Is fully waterproof
Has daylight readable BLUE LED’s
No external switches, knobs or buttons
Does not need calibrating
Batteries included (3 x AA)
Long battery life
Will not break if accidentally dropped
Comes with a FREE 5 year guarantee
Made in New Zealand
Popularity: unranked [?]
Milwaukee Brix/Sugar Refractometer for general purpose with ATC has a range of 0-32% brix, and a resolution of 0.1%. Use this item to gauge the health of your plants by measuring their sugar content. This meter method is used by horticulturalists to indicate plant stress before the plant shows symptoms. Simple to use- just extract one drop of liquid from the petiole tissue (leaf stem) and easily measure sugar content.
What is the Brix scale?
The Brix scale was originally derived when Adolf Ferdinand Wenceslaus Brix recalculated Balling’s scale to a reference temperature of 15.5 °C. The Brix scale was subsequently recalculated again, and now uses a reference temperature of 20 °C. Brix can be approximated as 261.3*(1 – 1/g), where g is the specific gravity of the solution at 20 °C.
Brix is primarily used in fruit juice, wine making and the sugar industry. Brix is used in the food industry for measuring the approximate amount of sugars in fruits, vegetables, juices, wine, soft drinks and in the sugar manufacturing industry. For fruit juices, one degree Brix is about 1-2% sugar by weight. This usually correlates well with perceived sweetness. Since Brix is related to the concentration of dissolved solids (mostly sucrose) in a fluid it is therefore related to the specific gravity of the liquid. Because the specific gravity of sucrose solutions is well known, it can also be measured by a refractometer.
Modern Brix meters are digital refractometers that calculate the Brix value based on refractive index. These meters are typically portable, splash-proof and very simple to use, so that they can be operated by anybody directly on location. More and more often Brix is measured to determine ideal harvesting times of fruit and vegetables so that products arrive at the consumers in a perfect state or are ideal for subsequent processing steps such as vinification.
The Milwaukee Refractometer series are precision optical instruments used for measuring concentrations of substances in aqueous solutions. They work using the principle of light refraction trough liquids. When passing light trough a liquid the refracted angle will be shown on the scale determining the amount of dissolved solids in the liquid.
The Milwaukee refractometer is very simple to use: simply place one drop of your sample on the prism and read the results on the scale immediately!
All the Milwaukee refractometers have adjustable focus, easy to read numbers for good resolution and zero adjustment screw for calibration.
Each Milwaukee refractometer is calibrated and adjusted to measure at 20°C (68°F). Models with Automatic Temperature Compensations are also available, and are suitable, for applications where the temperature of the samples vary.
Popularity: unranked [?]
The waterproof Combo (it even floats) has a large easy-to- read, dual-level LCD and automatic shut off. Measurements are highly accurate with a unique stability indicator right on the LCD. pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC). All pH and EC/TDS readings are automatically temperature compensated (ATC), and temperature values can be displayed in Celsius or Fahrenheit. The HI 98129 is waterproof and the housing has been completely sealed against humidity and is designed to float.
This technologically advanced tester has a replaceable pH electrode cartridge with an extend-able cloth junction as well as an EC/TDS graphite electrode that resists contamination by salts and other substances. This gives the meter a greatly extended life. Your tester no longer needs to be thrown away when the pH sensor is exhausted. Also, the stainless steel encapsulated temperature sensor facilitates faster and more accurate temperature measurement and compensation. A low battery symbol warns the user when the batteries are to be replaced. In addition the Battery Error Prevention System (BEPS) avoids erroneous reading caused by low voltage level by turning the meter off.
The EC/TDS conversion factor is user selectable as well as the temperature compensation coefficient (ß). Fast, efficient, accurate and portable, the Combo pH, EC/TDS and temperature tester brings you all the features you’ve asked for and more!
HI 98129 is supplied complete with:
- Protective Cap
- Electrode Removal Tool
The HI 98129 is warranted for one year against defects in workmanship and materials when used for its intended purposes and maintained according to instructions. The electrode is warranted for a period of six months. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered.
Popularity: unranked [?]